Hurricane Isaac has been downgraded to a tropical storm at 2pm this afternoon. Winds are now down to 70mph, but Isaac continues to pose a major flooding hazard to the US. After being quasi-stationary almost all night Hurricane Isaac made a second landfall over Port Fourchon, Louisiana this morning. Isaac was able to make a second landfall because the eye made a slight jog to the West back over water. Isaac is trapped by a high pressure ridge to the North. The steering currents that will turn Isaac won't pickup for another 24 hours. That's when the ridge pulls East of Isaac, allowing it to turn more North and East in time. So as a result of this slow motion today, the major threat continues to be flooding. Wind driven over topping of dams and levees has also caused some flooding in New Orleans according to our Sherry Williams. Latest forecast calls for the core of heaviest rain to fall along the track of Isaac these next 24 hours. Hurricane Isaac should weaken to a tropical storm by Thursday AM. On it's projected track Isaac will cause flooding well inland along the west central portions of the Mississippi valley to the Ohio valley through the weekend. As much as 6" - 13" of flooding downpours are likely. We won't stop hearing weather headlines about Isaac until next week.
Follow the eye of Isaac here on radar. . .
Latest from the National Hurricane Center. . . .
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
ABOUT 35 MI...60 KM S OF BATON ROUGE LOUISIANA
ABOUT 60 MI...95 KM W OF NEW ORLEANS LOUISIANA
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 6 MPH...9 KM/H
MINIMUM CENTRAL PRESSURE...975 MB...28.79 INCHES